OS Type Conflict running Azure CLI command from PowerShell

Question

I am running an Azure CLI command in a Windows 10 Professional PowerShell script and I receive this error:

(Conflict) Run command OS type 'Windows' does not match the target OS Linux.

PowerShell version:

Major  Minor  Build  Revision
-----  -----  -----  --------
5      1      19041  1237

The failing PowerShell script:

$ResourceGroup= "Development"
$VmName = "ubuntu-test"

 az vm run-command invoke `
--resource-group $ResourceGroup `
--name $VmName `
--command-id RunPowerShellScript `
--scripts "ufw disable"

Note: The ` character is the backtick. The one on the same key as the tilde ~

The same command without line continuation backticks works:

az vm run-command invoke --resource-group Development --name ubuntu-test --command-id RunShellScript --scripts "ufw disable"

If I do a Write-Host the output is a single line with the correct arguments minus the quotes around the --script command.

Write-Host az vm run-command invoke `
--resource-group $ResourceGroup `
--name $VmName `
--command-id RunPowerShellScript `
--scripts "ufw disable"

az vm run-command invoke --resource-group Development --name ubuntu-test --command-id RunPowerShellScript --scripts ufw disable

The documentation for the AZ CLI invoke command mentions nothing about setting the OS Type.

az VM run-command invoke

mklement0 · Accepted Answer · 2021-09-19 01:26:24Z

3

I think the use of line-continuations (` at the very end of lines) is incidental to your problem.

Apart from the use of variables vs. literals, the crucial difference between your multi-line command and your working single-line command is:
--command-id RunPowerShellScript vs. --command-id RunShellScript.

It looks like the VM you're targeting is a Linux machine, and that --command-id RunPowerShellScript isn't supported there, whereas --command-id RunShellScript is.

az vm run-command list ... can apparently be used to discover supported --command-id values.

edited Sep 19, 2021 at 1:26

answered Sep 19, 2021 at 1:20

mklement0

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1 Comment

John Hanley Over a year ago

Thank you. This is an example of not seeing a problem right in front of me. Even in my question is used two different forms RunShellScript and RunPowerShellScript. Your second eyes solved my problem. Now I also know why the error message said Windows. I knew that PowerShell run commands are not supported on Linux.

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